Home / 136,223.04-204,068.88-76,879.20

Finding the Fourth Proportional to 136,223.04, 204,068.88 and 76,879.20

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Solution

The fourth proportional to 136,223.04, 204,068.88 and 76,879.20 is: 115,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,223.04 : 204,068.88 = 76,879.20 : x
  2. Step 2: Convert to fraction form
    136,223.04/204,068.88 = 76,879.20/x
  3. Step 3: Cross multiply
    136,223.04x = 204,068.88 × 76,879.20
  4. Step 4: Simplify right side
    136,223.04x = 15,688,652,239.30
  5. Step 5: Solve for x
    x = 15,688,652,239.30/136,223.04
  6. Step 6: Final answer
    x = 115,168.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.